xpose4 (version 4.5.3)

xvardef: Extracts and set Xpose variable definitions.

Description

This function extracts and set Xpose variable definitions in "xpose.data" objects.

Usage

xvardef(x, object)
xvardef(object) <- value

Arguments

x

The name of an xpose variable (see below).

object

An xpose.data object.

value

A two element vector of which the first element is the name of the variable and the second the column name in the Data slot of the object.

Value

Returns a string with the name of the data variable defined as the Xpose data variable.

Details

The Xpose variable definitions are used to map particular variable types to column names in the data.frame in the Data slot of the "xpose.data" object. The single-valued Xpose variable definitions are: id, idlab, idv, occ, dv, pred, ipred, iwres, res. The (potentially) vector-valued Xpose variable definitions are: parms, covariates, ranpar, tvparms (parameters, covariates, random effects parameters=etas, typical value parameters). The default values of these can be found in the createXposeClasses function.

See Also

xpose.data-class,xpose.prefs-class

Examples

## xpdb5 is an Xpose data object
## We expect to find the required NONMEM run and table files for run
## 5 in the current working directory
xpdb5 <- xpose.data(5)

## get the column name in the Data slot of object xpdb5
## corresponding to the label dv
xvardef("dv", xpdb5)

## reset the which column the label dv points to in the Data slot of
## object xpdb5
xvardef(xpdb5) <- c("dv", "DVA")